1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* Copyright 2020 - 2023 Anton Tananaev (anton@traccar.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.traccar.protocol;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.handler.codec.mqtt.MqttPublishMessage;
import org.traccar.BaseMqttProtocolDecoder;
import org.traccar.Protocol;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import org.traccar.session.DeviceSession;
import java.nio.charset.StandardCharsets;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;
public class IotmProtocolDecoder extends BaseMqttProtocolDecoder {
public IotmProtocolDecoder(Protocol protocol) {
super(protocol);
}
private Object readValue(ByteBuf buf, int sensorType) {
return switch (sensorType) {
case 0 -> false;
case 1 -> true;
case 3 -> 0;
case 4 -> buf.readUnsignedByte();
case 5 -> buf.readUnsignedShortLE();
case 6 -> buf.readUnsignedIntLE();
case 7, 11 -> buf.readLongLE();
case 8 -> buf.readByte();
case 9 -> buf.readShortLE();
case 10 -> buf.readIntLE();
case 12 -> buf.readFloatLE();
case 13 -> buf.readDoubleLE();
case 32 -> buf.readCharSequence(buf.readUnsignedByte(), StandardCharsets.US_ASCII).toString();
case 33 -> ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedByte()));
case 64 -> buf.readCharSequence(buf.readUnsignedShortLE(), StandardCharsets.US_ASCII).toString();
case 65 -> ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedShortLE()));
default -> null;
};
}
private void decodeSensor(Position position, ByteBuf record, int sensorType, int sensorId) {
String key;
switch (sensorId) {
case 0x0002 -> position.set(Position.KEY_MOTION, sensorType > 0);
case 0x0008, 0x009B -> {
if (sensorType > 0) {
position.set(Position.KEY_ALARM, Position.ALARM_JAMMING);
}
}
case 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015 -> {
key = Position.PREFIX_IN + (sensorId - 0x0010 + 2);
position.set(key, sensorType > 0);
}
case 0x0062 -> position.set("doorFL", sensorType > 0);
case 0x0063 -> position.set("doorFR", sensorType > 0);
case 0x0064 -> position.set("doorRL", sensorType > 0);
case 0x0065 -> position.set("doorRR", sensorType > 0);
case 0x001E -> position.set("buttonPresent", sensorType > 0);
case 0x006D -> position.set(Position.KEY_IGNITION, sensorType > 0);
case 0x008B -> position.set("handBrake", sensorType > 0);
case 0x008C -> position.set("footBrake", sensorType > 0);
case 0x0094, 0x0095, 0x0096 -> {
key = Position.PREFIX_OUT + (sensorId - 0x0094 + 1);
position.set(key, sensorType > 0);
}
case 0x009A -> position.set(Position.PREFIX_OUT + 4, sensorType > 0);
case 0x2000 -> position.set(Position.KEY_OBD_SPEED, record.readUnsignedByte());
case 0x2001 -> position.set(Position.KEY_SATELLITES, record.readUnsignedByte());
case 0x2006 -> position.set(Position.KEY_THROTTLE, record.readUnsignedByte());
case 0x2007 -> position.set(Position.KEY_FUEL_LEVEL, record.readUnsignedByte());
case 0x2008 -> position.set(Position.KEY_COOLANT_TEMP, record.readUnsignedByte());
case 0x2009 -> position.set("fuel2", record.readUnsignedByte());
case 0x200A -> position.set(Position.KEY_ENGINE_LOAD, record.readUnsignedByte());
case 0x2041 -> position.set(Position.KEY_BATTERY_LEVEL, record.readUnsignedByte());
case 0x3000 -> position.set(Position.KEY_POWER, record.readUnsignedShortLE() * 0.001);
case 0x3001, 0x3002, 0x3003 -> {
key = Position.PREFIX_ADC + (0x3003 - sensorId + 3);
position.set(key, record.readUnsignedShortLE() * 0.001);
}
case 0x3004 -> position.set(Position.KEY_BATTERY, record.readUnsignedShortLE() * 0.001);
case 0x300C -> position.set(Position.KEY_RPM, record.readUnsignedShortLE());
case 0x3021 -> position.set(Position.KEY_FUEL_CONSUMPTION, record.readUnsignedShortLE() * 0.05);
case 0x3037 -> position.set("cargoWeight", record.readUnsignedShortLE() * 2);
case 0x4001 -> position.set(Position.KEY_FUEL_USED, record.readUnsignedIntLE());
case 0x4002 -> position.set(Position.KEY_HOURS, record.readUnsignedIntLE());
case 0x4003 -> position.set(Position.KEY_ODOMETER, record.readUnsignedIntLE() * 5);
case 0x4063 -> position.set(Position.KEY_AXLE_WEIGHT, record.readUnsignedIntLE());
case 0x5000 -> position.set(Position.KEY_DRIVER_UNIQUE_ID, String.valueOf(record.readLongLE()));
case 0x5004, 0x5005, 0x5006, 0x5007 -> {
key = Position.PREFIX_TEMP + (sensorId - 0x5004 + 1);
position.set(key, record.readLongLE());
}
case 0x500D -> position.set("trailerId", String.valueOf(record.readLongLE()));
case 0xA000 -> position.set(Position.KEY_DEVICE_TEMP, record.readFloatLE());
case 0xA001 -> position.set(Position.KEY_ACCELERATION, record.readFloatLE());
case 0xA002 -> position.set("cornering", record.readFloatLE());
case 0xA017, 0xA018, 0xA019, 0xA01A -> {
key = Position.PREFIX_TEMP + (sensorId - 0xA017 + 1);
position.set(key, record.readFloatLE());
}
case 0xB002 -> position.set(Position.KEY_OBD_ODOMETER, record.readDoubleLE());
default -> {
key = Position.PREFIX_IO + sensorId;
position.getAttributes().put(key, readValue(record, sensorType));
}
}
}
@Override
protected Object decode(
DeviceSession deviceSession, MqttPublishMessage message) throws Exception {
List<Position> positions = new LinkedList<>();
ByteBuf buf = message.payload();
buf.readUnsignedByte(); // structure version
while (buf.readableBytes() > 1) {
int type = buf.readUnsignedByte();
int length = buf.readUnsignedShortLE();
ByteBuf record = buf.readSlice(length);
if (type == 1) {
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.setTime(new Date(record.readUnsignedIntLE() * 1000));
while (record.readableBytes() > 0) {
int sensorType = record.readUnsignedByte();
int sensorId = record.readUnsignedShortLE();
if (sensorType == 14) {
position.setValid(true);
position.setLatitude(record.readFloatLE());
position.setLongitude(record.readFloatLE());
position.setSpeed(UnitsConverter.knotsFromKph(record.readUnsignedShortLE()));
position.set(Position.KEY_HDOP, record.readUnsignedByte());
position.set(Position.KEY_SATELLITES, record.readUnsignedByte());
position.setCourse(record.readUnsignedShortLE());
position.setAltitude(record.readShortLE());
} else {
if (sensorType == 3) {
continue;
}
decodeSensor(position, record, sensorType, sensorId);
}
}
positions.add(position);
} else if (type == 3) {
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
getLastLocation(position, new Date(record.readUnsignedIntLE() * 1000));
record.readUnsignedByte(); // function identifier
position.set(Position.KEY_EVENT, record.readUnsignedByte());
positions.add(position);
}
}
buf.readUnsignedByte(); // checksum
return positions.isEmpty() ? null : positions;
}
}
|
